Charles e



(No Model.) 0. E. BARRETT..-

SHAKE R'AIL FOR FOURDRINIER MACHINES.

No. 595,753. Patented Dec. 21, 1897. 211:112 F91 V 7 5111171; 0

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UNITED STATES Enrica PATENT CHARLES E. BARRETT, OF LAWRENCE,MASSACHUSETTS, ASSIGNOR TO THE J H. HORNE & SONS COMPANY, OF SAME PLACE.

SHAKE-RAIL FOR FOURDRINIER MACHINES.

SPECIFICATION forming part of Letters Patent No. 595,753, dated December21 1897. Application filed November 27, 1896. Serial No. 613,638. (Nomodel.)

To a whom it may concerm Be it known that 1, CHARLES E. BARRETT, ofLawrence, county of Essex, and State of Massachusetts, have invented anImprovement in Shake-Rails for Fourdrinier Paper Machines, of which thefollowing description, in connection with the accompanying drawings, isa specification, like letters on the drawings representing like parts.

The present invention relates to a Fourdrinier paper-machine, and isembodied in a novel construction and arrangement of the supports for theshake-frame whereby a better action of said shake-frame is produced forthe proper laying of the fiber along the wire.

As heretofore constructed the shake-frame has been mounted upon arms orsupports pivotally connected therewith at their ends, the result beingthat the shake-rails and table-rolls connected therewith when vibratedor moved from side to side travel on the arc of a circle, the radiusthereof being determined by the length of the supports for theshake-frame, so that an up-and-down or vertical movement is imparted tothe pulp-support in addition to the rectilinear movement. Thisup-and-down movement is objectionable and results not only in animperfect laying of the fiber, but also in a twisting and straining ofthe shake-rails, and the present invention is intended to obviate thesedifiiiculties by supporting the shake-frame in such a manner that thesurface of the table-rolls, including that of the breast-roll, will beconfined in its movement to a horizontal plane in the vibration of theshake-frame without any up-and-down movement whatever.

In carrying out the invention the shakeframe, in which the breast-rollis mounted, is supported at its movable end upon movable supportingmembers properly held in position and having cylindrical upper and lowersurfaces, thus practically constituting rollers or rolling supportsalong which the shakeframe moves, so that in the lateral movementthereof there is no vertical movement whatever, the desired result thusbeing accomplished and the construction at the same time simplified, thepivotal joints, moreover, being dispensed with, so that wear ispractically reduced to a minimum.

Figure l is a front elevation of the shakeframe, showing the supportstherefor and the breast-roll. Fig. 2 is a side elevation of a sufficientportion of the machine to show the general arrangement of theshake-rails and shake-frame; and Fig; 3 is aperspective view, on anenlarged scale, of the supporting member, which forms the main featureof the invention.

The shake-frame a is provided at its ends with uprights a adapted tosupport the breast-roll b, the said uprights being preferably formedintegral with the shake-frame. The shake-rails o are pivotall y securedin any suitable way at the top of the said uprights, as indicated at cin Fig. 2, to provide for the movement of the shake-frame with relationto the stationary parts of the machine beyond it, the said shake-railsextending back to the stationary support A, where they are pivoted at 0The table-rolls c are mounted in bearings 0 connected to the shake-railsby hang ers 0 these parts, together with the wiregauze belt 0 (shownonly in Fig. 2,) constituting whatv is known as the wire part of aFourdrinier machine. To provide for the lateral vibratory movement ofthe said shake-frame a, it is mounted, in accordance with the presentinvention, upon the top of movable supporting members cl, which areinterposed between the lower surface of said shake-frame at the endsthereof and the floor or support e, upon which the machine is set up.The said members d have cylindrical upper and lower surfaces 01 and (ithe shakeframe at having fiat bearing portions a resting upon the uppersurface 61 while the lower surface 01 rests upon the stationary supporte, a shoe or supporting-plate e being shown as secured to the floor e toprovide a proper bearing for the member 01. The member d, therefore,practically constitutes, so far as the lateral movement of theshake-frame a is concerned, a rolling support upon which the said framemoves back and forth, so that in the vibration thereof there is nolifting and lowering of the same as is the case when it is mounted atthe end of swinging arms or pivoted supports, the movement of the wirepart being in a horizontal plane.

As herein shown, the shake-frame a is held in position upon thesupporting members (1 (there being one of said members at each end ofthe said frame) by means of cooperating engaging portions, the saidframe at having shoulders or projections a between which extends atongue 61 there being, preferably, two of said tongues, one at each sideof the support d, cooperating with two corresponding sets of projectionsa at opposite sides of the upright a". In a similar manner the shoe 6 isprovided with a projection e at each side thereof, extending upwardbetween shoulders, shown as formed on lateral projections e from thesupporting member at, the shoe 2 being preferably provided with abearing-surface e risingsomewhat above the main surface thereof, withwhich bearingsurface the support at directly engages.

The shoes 6 may be secured to the door by any suitable or usual means,it being obvious that the projections d and (1 keep the parts in properoperative position after they are once assembled, there being,practically, no pivotal joints or bearings to be taken care of, whilethe vibration of the frame takes place in a straight instead of curvedline of movement, with practically no frictional resistance, since itmoves upon a rolling support.

The vibration of the frame may be pro vided for in any suitable way, thesaid frame being herein shown as provided with "a pitman f, secured to alug or projection f at the side thereof.

To prevent the shake-frame from rolling off the supports if for anyreason the pit'mati f is disconnected therefrom, the said supports areshown in Fig. 1 as provided with horns or projections d adapted toengage the under side of the shake-frame a in the rolling movement ofthe supports if said movement is continued beyond the normal.

It is found that the rectilinear movement obtained by this constructionand arrangement of the supports for the shake-frame lays the fiber ofthe pulp to much better advantage, since the vertical movement, which iscombined with the rectilinear movement in machines as heretoforeconstructed, tends to tip up the fibers and roughen the sheet, suchtendency being obviated by getting rid of the vertical movement.Difiiculty is experienced also .in such machines, owing to the fact thatthe peculiar movement due to the manner of supporting the shake-frameresults in a twisting of the shake-rails, tending to wear loose or breakthe pivotal connection thereof with the stationary portion of themachine. This difficulty is entirely obviated by the construction hereindescribed, which produces a movement of the shakerails, confined to ahorizontal plane perpendicularto the axis of the pivots, with notendency to twist or strain.

The breast-roll is shown as secured to the shake-frame on the inner sidethereof or the side toward the stationary part of the machine, theconstruction being such that the bearings for the breast-roll aredetachably secured to the shake-frame, so that it is not necessary toremove the breast-roll bearings from the said roll in order to removethe roll from the machine. Since the breast-roll is on the inner side ofthe shake-frame, moreover, it is obvious that after it has been loweredit may be moved toward the stationary part of the machine to slacken theWire-gauze belt, so that it is not necessary to disturb thetension-rolls, which are provided to keep the said belt tight.

The breast-roll is mounted in bearings I)? at each end thereof, the saidbearings being of any suitable construction, and each bearing isprovided with a tongue b3, extending upward into an opening" in anoverhanging lug b secured, as by bolts 6 to the inner side of the shake-frame. After the said tongue is inserted in the opening in the lug b itis secured by means of apin b4", extending laterally through said lug,the said lug being also provided With a set-screw b to prevent anylateral play of the projection b in its socket.

The lug b is shown as provided with a setscrew b for the proper verticaladjustment thereof. WVhen, therefore, it is necessary to remove thebreast-roll, the set-screw Z7 is loosened and the pin 12 taken out, andthe said breast-roll may then be lowered and moved inward or toward thestationary end of the machine, so that it can be readily moved outendwise at the side of the machine.

1. In a Fourdrinier paper machine, the combination with the shake-frameand shakerails pivotally secured thereto at one end, and pivotallyconnected at their opposite ends to a stationary support, of stationarysupporting plates or shoes for said frame, and

movable supporting members having cylindrical upper and lower surfaces,said members being interposed between said frame and said plates andprovided with engaging portions cooperating with said frame and thestationary supporting-plate, substantially as CHARLES E. BARRETT.

Witnesses:

J OHN W. BOLTON, GEORGE E. BURNI-IAM.

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